Amplified Pillow Speaker
An embroidered fabric speaker made into a pillow. Inside the pillow an amplification module hacked from a commercial device lets you easily connect your mp3 player to play back your favorite music. While the speaker might not be as loud as commercial speakers, you can very comfortably lay your head down on it to rest.
Volume Detection
Still a work in progress…. Using an Arduino or an ATtiny microcontroller to translate sound (from a microphone or an audio jack) into light patterns.
simple heat circuit
You can make a simpler heat controlling circuit using TIP122 transistor. The above image is the schematic. If you want to control a lot of heat lines, you can use shift register between Arduino and input pin of TIP122. This method is not good if you turn on/off the heat in high frequency. TIP122 will […]